903
Deutz-Fahr 903: DEF Tank Temperature Too High
Issue description
The system has detected that the temperature of the DEF tank is exceeding acceptable limits. This condition may affect the performance or integrity of the DEF fluid and the system components.
Check the cause
The temperature sensor located in the DEF tank
The cooling system or environment surrounding the DEF tank
The wiring or connections to the temperature sensor
Repair steps
Inspect
Inspect the temperature sensor in the DEF tank for damage or improper installation.
Check
Check the cooling system or the area around the DEF tank for any obstructions or issues that may be causing excessive heat.
Test
Test the wiring and connections to the temperature sensor for continuity and proper signal transmission.
Parts you might need
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